In the flexural strength test of cemented carbide, determining the test conditions is an important step. The specific contents include:
- Determine the loading rate: The loading rate refers to the force or strain rate that the sample endures per unit time. During the test process, the loading rate should be determined in accordance with relevant standards or specifications to ensure the accuracy and reliability of the test results.
- Determine the loading method: The loading method includes static loading and dynamic loading. Static loading means that the sample is held under a certain constant load for a period of time and then unloaded to test the static bending performance of the sample; dynamic loading means that the sample is loaded and unloaded at a certain speed under the action of alternating loads to test the static bending resistance of the sample. Test the dynamic bending properties of the samples.
- Determine the support method: In the three-point bending method, a suitable support method needs to be used to support the free ends at both ends of the sample. The specific choice of support method depends on factors such as the shape, size, and thickness of the sample, and needs to be selected based on the actual situation.
- Determine the span and spacing: In the three-point bending method, the size of the span and spacing needs to be determined. Span is the distance between the two ends of the sample, and spacing is the distance between the sample and two pivot points. These parameters need to be determined based on factors such as the shape, size and thickness of the sample.
To sum up, in the flexural strength test of cemented carbide, multiple factors need to be considered to determine the test conditions, including loading rate, loading method, support method, span and spacing, etc. These factors have an important impact on the accuracy and reliability of test results, so they need to be carefully considered and set up appropriately.
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